#include <stdio.h>

#define INCH_PER_CM 2.54

int main(void)
{
    float high_cm, height_inch;
    
    printf("Please enter your height by inch: ");
    scanf("%f", &height_inch);

    high_cm = height_inch * INCH_PER_CM;
    printf("OK, your height have %f CM\n", high_cm);

    return 0;
}